> Language skills... nothing to say here. Every Swede can speak and write English. You won't have problems here.
This is true insofar as that I've been studying Interaction Design in Sweden for one and a half years now (one half year to go) and I have not needed to learn Swedish. However, I've been informed that to get employed in Sweden it's quite vital that you know Swedish. There's plenty of jobs where you don't even really need to know Swedish, but they demand it anyway to give the local people a bigger chance.
To give an example: I know of other students who couldn't get a job delivering newspapers because they didn't speak Swedish because, and I quote "suppose a stranger on the street asks you for directions, how are you going to help them?" which is obviousy part of the job description of newspaper delivery boy.
Can't say how that translates for jobs like UX, although I hear similar stuff from graduates: knowing Swedish is almost necessary if you want to get employed.
I'm quite surprised about your fears at night - I live in Malmö (which has a reputation) and have never felt threatened or in danger at all.
But yeah, regarding other types of job, without Swedish, you'll have it tough. My partner speaks fluent Mandarin and English and has a Bachelors degree with honours. Will probably have an incredible tough time finding a job in "Communications". Ugh... Shit degree but you didn't hear that from me.
Some couples straddle Copenhagen–Malmö (35 minutes by train from each other across the strait).
I like Stockholm a lot and think it´s a great oppertunity to come here.
Coming from the U.S., cities in the Nordic countries are extremely calm and low-crime, so low that you'd need a logarithmic axis to show their crime rates alongside those of major U.S. cities (L.A., Chicago, Atlanta, NYC, etc.). I don't feel at all unsafe walking around the media-hyped "bad" areas of central-ish Copenhagen alone at 3am, or using a laptop on the train/subway at any hour. The housing projects way out in the suburbs may be different, but if you don't live there, you have little reason to ever be there.
At least it's snow on your train tracks. Here in the UK, leaves, rain and yes, even sunshine can delay our trains... :-)
Taxes aren't as high as people complain about, unless you're a freelancer. Small businesses get screwed royally and don't get much support compared to larger ones, but as an employee you will have it decent. You get what you pay for. Compared to say in Singapore, where you pay nada, and get nada. Some people like it.
Crime and religious extremism is in all time high. They do correlate to some degree. I lived in SG for two years, and I felt incredibly safe there (not even locking our door) coming back to Sweden, I feel a but more paranoid about having my laptop in my outside compartment of my bag.
I'm too scared to pickup my iPhone from my pocket when walking home late.
Public Transport is amazing. Trains across Sweden, is less so. I got stuck or eleven hours one winter. They seem incredibly amazed that it snows in Winter... each year.
Dining out is also pretty cool. Not as much variety as I'd like, but the level between fine dining and regular dining on the food quality is pretty similar. So if you're ok not having a waiter, you can pay less and still have decent food.
Language skills... nothing to say here. Every Swede can speak and write English. You won't have problems here.